EP0557849A2 - Méthode de transmission des données en paquets sur le canal D dans un central privé RNIS - Google Patents

Méthode de transmission des données en paquets sur le canal D dans un central privé RNIS Download PDF

Info

Publication number
EP0557849A2
EP0557849A2 EP93102351A EP93102351A EP0557849A2 EP 0557849 A2 EP0557849 A2 EP 0557849A2 EP 93102351 A EP93102351 A EP 93102351A EP 93102351 A EP93102351 A EP 93102351A EP 0557849 A2 EP0557849 A2 EP 0557849A2
Authority
EP
European Patent Office
Prior art keywords
channel
subscriber line
circuit
data
packet data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93102351A
Other languages
German (de)
English (en)
Other versions
EP0557849A3 (en
Inventor
Harald Dipl.-Ing. Schreiber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0557849A2 publication Critical patent/EP0557849A2/fr
Publication of EP0557849A3 publication Critical patent/EP0557849A3/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H04Q11/0428—Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals

Definitions

  • the invention relates to a method for transporting D-channel packet data in ISDN private branch exchanges, with subscriber line circuits for connecting subscriber stations to a B-channel switching network.
  • ISDN networks are organized according to the CCITT ISDN recommendations of the series I.110 to I.464.
  • the signaling network within a private branch exchange is not suitable for packet-switched data traffic because it would be too heavily loaded by this data traffic. Packet switching information should therefore preferably not be transmitted via the signaling network.
  • the invention solves this problem in that the D-channel packet switching information in the subscriber line circuit is separated from the D-channel signaling information and the transport of the D-channel packet data takes place over at least one predetermined transmission channel of the B-channel switching matrix with multiple access possibilities in the manner of a LAN .
  • This evaluation can be expanded in such a way that the separation into packet switching information and signaling information or merging of packet switching information and signaling information takes place in the subscriber line circuit.
  • This separation or merging directly in the subscriber line circuit prevents packet switching information from having to be transmitted in the further signaling network of the ISDN private branch exchange.
  • a transmission channel in the B-channel switching matrix of the ISDN private branch exchange is used to transport the packet switching information, which enables multiple connections. How such transmission channels can be implemented in a B-channel switching network with the properties of a LAN in a private branch exchange can be found in DE 38 08 647 C2, DE 39 12 333 C2 and DE 40 23 032 A1 for different implementation variants of the B- Channel switching matrix can be removed.
  • an access method to the common transmission channel can be provided, which leads to time delays in the transport of the data.
  • the D-channel packet data are temporarily stored in buffers of the subscriber line circuit for correct transmission.
  • At least one transmission channel with multiple connection options can be connected to a packet handler.
  • FIG. 1 shows a block diagram of an ISDN private branch exchange 10 to which subscriber stations 12 are connected via subscriber lines 14.
  • the subscriber stations 12 are designed such that information can be sent or received on the D-channel packet switching information for a data transmission connection to another subscriber station 12 or a computer 38 which is connected to the ISDN private branch exchange 10 via a LAN 36.
  • the subscriber lines 14 are connected via subscriber line circuits 16.
  • the LAN 36 is connected via a packet handler 32, which is connected to a PCM connection 34 via a further connection Second ISDN private branch exchange or ISDN switching center, not shown, can be connected.
  • Subscriber line circuit 16 and packet handler 32 can send 20 B-channel data to a switching matrix 18 on a time-division multiplex line and 22 B-channel data can be received from the switching matrix 18 on a second time-division multiplex line.
  • the subscriber line circuits 16 and the packet handler 32 are connected via control lines 24, 26 to a central controller 28, which in turn controls the switching network 18 for switching transmission channels between the time-division multiplex lines 20, 22 via a control connection 30.
  • At least one transmission channel for multiple connections is provided in the B-channel switching matrix and, for example, all subscriber line circuits and packet handlers connected to the B-channel switching matrix announced when the ISDN private branch exchange was initialized.
  • FIG. 2 shows a block diagram of a subscriber line circuit 16 for carrying out the method according to the invention.
  • the subscriber line 14 is connected to a demultiplexer 40 which separates the two B channels and the D channel. Via connections 42, 44, the data of the B channels arrive at an access circuit 46, the output of which is connected to the time-division multiplex line 20, which leads to the switching matrix 18 (FIG. 1). In this access circuit 46, the B-channel data of the subscriber are transmitted to the B-channel switching matrix at certain transmission times.
  • the D-channel data from the demultiplexer 40 reach a comparison device 50 and a switching device 52 via a connection 48.
  • the comparison device 50 is designed so that it can determine whether the incoming D-channel data is signaling information or packet switching information acts. For this purpose, it is connected via a connection 54 to a controller 70 of the subscriber line circuit 16, which supplies the comparison device 50 with the information necessary for differentiation and via which the arrival of signaling information and packet distribution information can be reported back.
  • controller 70 For connection control and for exchanging signaling information, the controller 70 is connected via the control lines 24, 26 to the central controller 28 (FIG. 1) of the ISDN private branch exchange.
  • the comparison device 50 controls the switchover device 52 via a connection 56 in such a way that signaling information is sent to the controller 70 via a connection 60 are forwarded and packet switching information reaches a buffer 62 via a connection 58. From this buffer 62, the packet switching information can be passed on via a connection 64 to the access circuit 46 on request, from where it is transmitted to the time-division multiplex line 20 at the correct transmission time.
  • the access circuit 46 is connected to the controller 70 via a connection 68, which informs the access circuit 46 of the transmission times and transmission authorization. Access control to the time-division multiplex line takes place within the access circuit 46, in particular the access protocol for the transmission channel with the possibility of multiple assignment is already dealt with by this circuit.
  • D-channel packet switching information is thus recognized by the comparison device 50 and loaded into a buffer memory 62 by means of the switchover device 52, from where it is sent via the access circuit 46 to a transmission channel with multiple assignment options for the B-channel switching network.
  • the controller 70 of the subscriber line circuit 16 and the subsequent signaling network (24, 26, 28) are therefore not burdened with D-channel packet switching information.
  • a second access circuit 72 is connected to the time-division multiplex line 22 on the reception side.
  • the reception times assigned by the controller of the ISDN private branch exchange are transmitted to an access circuit 72 via a connection 80 to the controller 70 of the subscriber line circuit.
  • Via two connections 74, 76, the incoming data of the two regular B channels go to a multiplexer 78, the output of which is connected to the subscriber line 14.
  • the data of the B-channel with multiple occupancy can be reached via a connection 82 to an input buffer 84 which, via a connection 86 to the controller 70, reports the arrival of packet switching information which is to be transmitted via the D-channel of the subscriber line.
  • This buffered packet switching information can be read into a pre-multiplexer 90 via a connection 88.
  • signaling information that is to be transmitted from the controller 70 to the subscriber station is read into these pre-multiplexers 90 via a connection 92.
  • the information required for the merging of signaling information and packet switching information is transmitted by the controller 70 via a connection 96.
  • the merged D-channel data is delivered via a connection 94 to the multiplexer 78, from where it is transmitted to the subscriber station. This reception of D-channel packet switching information does not burden the signaling network of the ISDN private branch exchange either.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
EP93102351A 1992-02-24 1993-02-15 Method of transmission of d-channel packet data in an isdn pbx Withdrawn EP0557849A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4205554 1992-02-24
DE19924205554 DE4205554C1 (fr) 1992-02-24 1992-02-24

Publications (2)

Publication Number Publication Date
EP0557849A2 true EP0557849A2 (fr) 1993-09-01
EP0557849A3 EP0557849A3 (en) 1997-01-08

Family

ID=6452408

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93102351A Withdrawn EP0557849A3 (en) 1992-02-24 1993-02-15 Method of transmission of d-channel packet data in an isdn pbx

Country Status (2)

Country Link
EP (1) EP0557849A3 (fr)
DE (1) DE4205554C1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0635987A3 (fr) * 1993-06-21 1997-06-25 Philips Electronics Nv Central téléphonique privé et circuit de ligne à utiliser dans un tel central privé.
ATE212171T1 (de) * 1993-08-16 2002-02-15 Siemens Ag Verfahren zum austausch von informationen zwischen isdn-endeinrichtungen
DE4409669C2 (de) * 1994-03-15 1997-04-24 Elmeg Kommunikationstech Adapter für den Anschluß mindestens eines analogen Fernsprechendgerätes an ein digitales Telefonnetz
DE4423792A1 (de) * 1994-07-01 1996-01-04 Deutsche Bundespost Telekom Verfahren und Schaltungsanordnung zur Mehrfachausnutzung von Basiskanälen im ISDN
DE19504817C2 (de) * 1995-02-14 1997-04-17 Deutsche Telekom Ag Verfahren und Anordnung zur Übertragung von Daten im ISDN-Netz
DE19531374A1 (de) * 1995-08-25 1997-04-24 Siemens Ag Verfahren und Schaltungsanordnung zur Übertragung von Audio- und/oder Videosignalen
DE19716246C2 (de) * 1997-04-18 2001-05-23 Deutsche Telekom Ag Telekommunikationsanlage mit Weitergabe von Daten während des Rufes
DE19808941C2 (de) * 1998-03-03 2001-11-29 Siemens Ag Übertragung von Namensinformationen über das öffentliche Euro-ISDN-Netz
DE20005260U1 (de) 2000-03-21 2000-05-18 Auerswald GmbH & Co. KG, 38162 Cremlingen ISDN-Telekommunikationsanlage

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8104368A (nl) * 1981-09-23 1983-04-18 Philips Nv Digitale telefooncentrale met voorzieningen voor het behandelen van pakketgeschakelde data.
DE3808647A1 (de) * 1988-03-15 1989-10-05 Nixdorf Computer Ag Verfahren zum steuern des aufbaus von datenuebertragungsverbindungen in telekommunikationsanlagen
JP2592911B2 (ja) * 1988-06-09 1997-03-19 富士通株式会社 通信パスの割り付け方法
DE3912333A1 (de) * 1989-04-14 1990-10-25 Nixdorf Computer Ag Verfahren zum steuern des aufbaus von datenuebertragungsverbindungen in telekommunikationsanlagen
DE4023032A1 (de) * 1990-07-20 1992-01-23 Siemens Nixdorf Inf Syst Verfahren zur steuerung eines digitalen koppelfeldspeichers

Also Published As

Publication number Publication date
DE4205554C1 (fr) 1992-12-24
EP0557849A3 (en) 1997-01-08

Similar Documents

Publication Publication Date Title
DE69214968T2 (de) Vermittlungssystem mit einer Eingangsverteilstufe für zeitmarkierte Pakete und mit einer Ausgangsstufe für die Gewährleistung der richtigen Reihenfolge der Pakete
DE69033231T2 (de) Erweitbare Paketvermittlungsarchitektur
DE69738386T2 (de) Verbesserungen in oder sich beziehend auf eine ATM-Vermittlungsstelle
DE4309848A1 (de) Kommunikationssystem zum Anschluß an eine Basisstation eines mehrzellularen, drahtlosen Fernsprechsystems
DE3853346T2 (de) Einfacher Adapter zum Multiplexen von ISDN-Endgeräten.
DE69228275T2 (de) Umlegen von Leitungen in einem digitalen Übertragungssystem-SLC
DE3128365C2 (de) Schaltungsanordnung für zentralgesteuerte Fernmeldevermittlungsanlagen, insbesondere für Zeitmultiplex-Fernsprechvermittlungsanlagen, mit Informationsaustausch zwischen teilzentralen Einrichtungen über eine zentrale Einrichtung
EP0557849A2 (fr) Méthode de transmission des données en paquets sur le canal D dans un central privé RNIS
DE3808413C1 (fr)
DE2211400B1 (de) Zweistufiges zeitmultiplex-vermittlungssystem
EP0870416B1 (fr) Procede de classement par ordre de priorite pour des courants de cellules dans des systemes transmettant des donnees selon un mode de transfert asynchrone (atm)
DE4423792A1 (de) Verfahren und Schaltungsanordnung zur Mehrfachausnutzung von Basiskanälen im ISDN
DE2708037C3 (de) Verfahren zum Betrieb von Teilbereichen eines digitalen Zeitmultiplex-Fernmeldenetzes für Fernverkehr
DE60316146T2 (de) Arbitrierung der medienbuschnittstelle für einen medienserver
EP0321050A2 (fr) Noeud de commutation d'un système de commutation à large bande
DE19524029C1 (de) Verfahren zum Anschluß von Access-Networks mit V5.2-Schnittstellen an Kommunikationssysteme mit nichtredundanten peripheren Einrichtungen
EP0126482B1 (fr) Système de télécommunication à la fois pour trafic en mode-circuit et pour trafic en mode-paquet
EP0868103A2 (fr) Acceptation des connexions avec priorité inférieure, en particulier du traffic en temps non reél (NRT), seulement par des voies redondantes
DE3932700C2 (de) Verfahren zur Durchschalteprüfung eines Koppelnetzes
EP0477627B1 (fr) Procédé pour connecter des terminaux de communication dans les réseaux de commutation à services integrés
EP0673179B1 (fr) Terminal de réseau de télécommunication
EP0477614B1 (fr) Unité de raccordement de lignes numériques pour connecter des terminaux d'abonné à un central de communication
DE4304195C2 (de) Vermittlungseinrichtung für dienstintegrierte und dienstspezifische Netze, die mindestens einer Zentral-Netz-Kontroll-Komponente und eine Schmalband-Vermittlungs-Komponente aufweist
DE3817407A1 (de) Verfahren zur digitalen informationsuebertragung fuer kommunikations-vermittlungssysteme
DE3823236A1 (de) Verfahren fuer eine programmgesteuerte fernsprechvermittlungsanlage mit einer alle vermittlungsfunktionen durchfuehrenden zentralsteuerung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): FR GB NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): FR GB NL SE

17P Request for examination filed

Effective date: 19970130

R17P Request for examination filed (corrected)

Effective date: 19970121

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

17Q First examination report despatched

Effective date: 20050414

18W Application withdrawn

Effective date: 20050426